I had issues with safari at first. Erased history and webpage data then worked fine. Could your app have same issues? Hope you had a backup of data if you have to delete.
And yes, gym buddy works well with various different routines. It takes a little getting used to at first but when you get the hang of it works just great.
It really sucks that supposedly knowledgeable people ( insurance company's ) go on BMI to determine a persons health status with no regard whatsoever to body composition.